Evaporative cooler



. 2 Sheets-Sheet 2,

(No Model.)

G. W. DEII'ZLER. EVAPORATIVE COOLER.

' Patented Peb. 6, 1883.

UNITED STATES PATENT OFFICE.

GEORGE W. DEITZLER, OF SAN FRANCISCO, CALIFORNIA.

EVAPORATIVE COOLER,

SPECIFICATION forming part of Letters Patent No. 271,813, dated February6, 1883.l

, Application filedJnne19,1S82. (No model.)

following to be a full, clear, and exact description thereof.

4My invention has reference to that class Vof coolers in-which lthereduction of temperature is produced by evaporation; and it consistsessentially in devices and process for delivering water to theevaporatingsurfaces automatically as needed, and so as to prevent waste.

Figurel is a perspective viewof a buttercooler. Fig. 2 is a-verticalsection of the same. Fig. 3 is a modification in perspective. Fig. 4shows the application of the cooling device to a dairy or other room. y

I do not restrict myself'to any particular form, size, or positionot'said coolers or evapmating-surfaces..

In Figs. 1 and2 l represent a vessel, A, which may be made of metal orother suitable material. A gutter or trough, B, for containing water, isattached to it at the top, and said vessel is surrounded with Turkishtoweling or other bibulous material, C, the upper margin of which visturned down into said gutter or Y side of the cover, as Well as anygases in said vessel, will pass over into the water in'said trough andout through the holes d in the lower edge ot' the rim ot' the cover,which holes will always be below 4the water-line, lthus eX- cluding airand dust from the vessel A.

I construct a water-tank, E, of suitable size, and connect it with thetrough B by means ot' pipe e, having a faucet,f, and a unioncoup ling,c. The upper end of said watervtank has an opening, g, which is ttedwith a screwplug. b. i The operationof my invention is as follows:

'After closing the faucet f,`I iill the tank E with water and thenadjust the screw-plug b, n1aking it perfectly air-tight. The faucet f isnow opened, and the water runs over into trough B,

in which it rises alittle higher than the top of pipe c, when it becomeseiectually trapped by atmospheric pressure. The edges ot the bibulouscovering C being below the water-line in trough B, the water is carriedover the rim of said trough by capillary force, thus saturating saidcovering, and when the water has been lowered in'said trough by saidcapillary force to about the center of pipe e, as shown by dotted linel, air will naturally pass up into the tank E, which will again forcethe water into the trough, as at rst, and in this way the operation willbe repeated as long as there is any water in the tank at or above thedotted line l, the trapping and untrapping being wholly automatic. Thetoweling on the cover of vessel A will also be saturated by thesameprocess.

Should water be drawn over faster than itis needed for the process ofevaporation, the ring H may be inserted', as shown, and by pressing itdown the iow of water may be regulated, and thus prevent dripping. 1twill now be understood that the evaporation ofthe moisture from theouter surface of vessel A will reduce the temperature within saidvessel, in which milk, butter, 85o., maybe stored and `preserved in thehot-test weatherwithout the use oi' ice or other coldproducin goperation or process. By placing the apparatus in a cuv- -rent of airthe Vevaporation will be increased and the cold augmented.

Fig. 2 is ainoditication ofthe cooler, and is designed for the storageof meat, 85e., as in an ordinary domestic refrigerator. llt is made ot'metal or other suitable material, lat on the sides and back and front,and of circular shape on top and bottom, with a door in front, asshown.' 1

The whole of the structure is covered with bibulous material, for thepurposes described, and on the top is a gutter or trough, B, in whichthebibulous material is immersed and held down by any suitable means,and water is supplied to said trough through pipe e, as shown, and asdescribed in Figs. l and 2. The inside of this refrigerator isfitted-with shelves, and in the bottom is a compartment for coolingwater or other liquids.

Fig. 4 shows a device for cooling the air of apartments. B B are'me-talgutters or troughs,

IOO

"nieai'is, and of any desired 'length and apart. The pipe 'e connectsthe troughs and supplies them with water from a tank, all arranged,constructed, and operated as described, 'and as shown in Figs. 1 and 2.

y The'lurhish toweling or other bibulous Ina- 'terial,'0, is suspendedover the troughs, being i'pressed down and held in the water by a wireor string stretched lengthwise through said troughs. The towels G aremade taut, and held apart at the bottom by wooden strips of the samediameter as the trough'. This device is placed in a housing, F, havingingress and egress ducts for the passage ot' air. The air which may becaused to pass over Vsaid moist towels will have its temperature greatlyreduced, and may be forced. to flow with great advantage into andthrough a dairy or other room by interposing such room between thehousing F and the chimney G, as more fully described in Patent No.247,020, granted t0 me September 17, 1881.

This device may be used, also, for evaporating saline and relatedsolutions.

I am aware that cooling by evaporation is not new, and vessels coveredby bibulous substances' moistened by Various means have been used forcooling butter, Sto., and I do not claim broadly such process orapparatus; but

What Iclaim as new, and desire to secure by Letters Patent, is-

1. In a refrigerating or cooling apparatus, the chamber A, with thegutter or'gutters B, and the surrounding porous or bibulous materialdipping into the gutter, in combination distance with the supply-tankand the pipe e, substantially as and for the purpose herein described.2. In a refrigerating or cooling apparatus,

the chamber A, with its surrounding porous or bibulous material dippinginto the channels or gutters B, supplied with water autovmaticallythrough the pipe e, in combination' with the tapering ring F, wherebythe supply of water foreva'poration may be regulated, substantially asherein described.

3. In a refrigerating or cooling apparatus, the chamber A, with thesurrounding porous material dipping into the water-supplied chan-- nelor gutter B, in combination with the con- Vex or arched roof or cover D,with the rim or flange perforated at d, and extending into the channelor gutter B, said cover having a porous envelope which dips into thechannel, substantiallyas herein described.

4. ln a coolingapparatus, the automatic process of supplying waterto-evaporating-surfaces by means ofthe supply-tank E, the faucet f, pipee, and gutter B, substantially as and for the purposes described andspecified.

5. A meansot' supplying waterautomatic illy to eVaporating-surfaces in acooling apparatus, consisting ot' the supply-tank E, pipe e, gutter B,and faucet f, substantially as and for the purposes described.

In witness whereof I hereunto set my hand.

S. H. NoURsE, G. W. EMERSON.

